ARO DG051B-7-B Operator's Manual - Page 5

Browse online or download pdf Operator's Manual for Drill ARO DG051B-7-B. ARO DG051B-7-B 8 pages. Pneumatic pistol grip drill

DISASSEMBLY/ASSEMBLY
INSTRUCTIONS
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Never apply excessive
pressure by a holding device which
may cause distortion of a part.
Apply pressure evenly to parts which have a press fit.
Apply even pressure to the bearing race that will be press
fitted to the mating part.
Use
correct tools and fixtures when servicing this
tool.
Don't
damage "0" rings when servicing this tool.
Use only genuine ARO replacement
parts for this tool. When
ordering, specify part number, description, tool model number
and serial number.
GEARING
DISASSEMBLY
Unthread and remove chuck (39) releasing spacer (38).
Clamp tool in a smooth face vise, clamping on handle (5).
Using a wrench on flats of ring gear (32) unthread and remove
ring gear and components.
Remove carrier (28
spindle (31) and gears from ring gear.
NOTE: Keep gears grouped
with with mating spindle when
disassembling
gearing.
Remove lock nut (37), releasing washer (36), bearings (34)
and spacers (33 and 35).
Do not remove gear (29) from carrier (28) unless damage is
evident. Gear (29) is press fit onto carrier.
GEARING
ASSEMBLY
Assemble
spacer (33) and one bearing (34) into ring gear,
pressing on outer race of bearing.
Coat shafts of spindle (31) and carrier (28) with ARO 33153
grease.
Assemble bearings (27) and gears to shafts.
Assemble carrier (28 ) to spindle (31).
Lubricate gears liberally with ARO 33153 grease (see "Rou-
tine Lubrication
Requirements",
page 3).
Assemble gearing into ring gear. Rotate spindle and gears to
align gear teeth with splines of ring gear.
Assemble spacer (35) and bearing (34) into ring gear, press-
ing on inner race of bearing.
Assemble washer (36) into ring gear, securing with lock nut
(37).
Assemble ring gear and components to tool and tighten, using
a wrench on flats of ring gear.
Assemble spacer (38) and chuck (39) to tool.
MOTOR DISASSEMBLY
Remove gearing from tool.
Remove spacer (24) and "0" ring (23)
Tap front edge of housing to remove motor assembly. Locat-
ing pin (25) should also come out.
Grasp cylinder in one hand and tap drive end Of rotor (18) with
a soft face hammer; motor will come apart.
NOTE:
Bearings
are press fit on rotor.
Remove end plate (17) and bearing (16) from rotor.
MOTOR ASSEMBLY
Lubricate bearing (16) with ARO 33153 grease and assemble
to end plate (17) pressing on outer race of bearing.
Assemble end plate (17) to rotor (18) pressing on inner race
of bearing.
Coat five rotor blades (19) with ARO 29665 spindle oil and as-
semble to rotor slots - straight side out.
Coat i.d. of cylinder (20) with ARO 29665 spindle oil and as-
semble over rotor. NOTE: Air inlet slots in end of cylinder must
be aligned with two air inlet holes in end plate (17).
Assemble
bearing (22) to end plate (21) pressing on outer
race of bearing.
Assemble
end plate (21) to rotor, pressing on inner race of
bearing. Be sure rotor turns without binding.
Insert locating pin (25) into .096" diameter blind hole at bottom
of motor cavity in housing.
Align notches of end plates and cylinder and install motor into
housing, aligning notches with locating pin (25).
Lubricate "0" ring (23) and assemble to end plate (21).
Assemble spacer (24) to motor.
Assemble gearing to tool.
THROTTLE
DISASSEMBLY
Remove spirol pin (6), driving it out the left side of housing.
Remove trigger (15), plug (14), valve assembly (13) and "0"
ring (7).
Remove "0" ring (8) valve (9), "0" ring (10) and retaining ring
(11).
Remove inlet adapter (2) and screen (1).
Remove muffler (3) and fillers (4).
THROTTLE
ASSEMBLY
Grease and install "0" ring (7).
Assemble
retaining ring (11) to valve stem (12).
Grease and assemble "0" ring (10) to valve (9).
Assemble valve (9) to valve stem, with smallest diameter of
valve going on valve stem first.
Grease and assemble
"0" ring (8) to valve stem (12).
Assemble valve stem thru plug (14) and assemble plug into
housing (5) aligning
.102" diameter
holes in housing and
plug.
Assemble
trigger (15) to tool, securing with spirol pin (6).
NOTE: Assemble spirol pin from left side of housing.
Assemble fillers (4) and muffler (3) to housing, securing with
inlet adapter (2).
Clean and replace screen (1) in inlet adapter.
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